李始叶螨对14种杀虫杀螨剂的抗性研究

采用FAO推荐的玻片浸渍冰法，以兰州市城关区甘报社院内零星果树上的李始叶螨为敏感种群（S），测定了兰州市安宁区刘家堡乡果园抗性李始叶螨种群（R）对14种杀虫杀螨剂抗性水平，结果表明：刘家堡乡果园的李始叶螨种群（R）对克螨特、甲氰菊酯、水胺硫磷、三氟氯氰菊脂、三氯杀螨醇等的抗性倍数最高，其抗性指数（RF）分别为61.22、43.12、41.99、41.89和30.12倍；对螨死净、氰久合剂、哒螨灵、螨嗪菊酯、集琦虫螨克、氧乐菊酯等的抗性倍数较低，其RF值分别为9.61、9.60、9.44、8.54、7.31和5.81倍；对联苯菊酯、氧化乐果、螨蚧克等产生了中度抗性，其RF值分别为27.72、20.65和10.90倍。

STUDY ON INSECTICIDE-RESISTANCE OF EOTETRANYCHUS PRUNI OUDEMANS TO 14 INSECTICIDES AND ACARICIDES

By means of the slide\|dip method recommended by FAO, the susceptible population of the Eotetranychus pruni Oudemans(S) on apple trees in Gansu Daily courtyard of Lanzhou were testeds as a specimen to study the insecticide\|resistance of the mites population(R) on apple trees in Liu Jiapu village community of Anning district as a whole. The results showed that the resistant population of the mites(R) of Liu Jiapu village community displayed a high resistance to propargite, fenpropathrin, isocarbophos, cyhalothrin, dicofol, the resistance factor(RF) being 61.22,43.12,41.99,41.89 and 30.12 times respectively; a low resistance to clofentezine(RF 9.61 ), fenvalerate\|monctrtophos(RF9.60), pyridaben(RF9.44), fenpropathrin\|clofentezine(RF8.54), abamectin(RF7.31), fenvalerate\|omethoate(RF5.81); and a moderate resistance to bifenthrin(RF27.72), omethoate(RF20.65), pyridaben\|acephate(RF10.90).